The Asian war bowThe bow is one of the earliest complex machines, a prime example of the storage and transfer of energy. The physics of the bow illuminates compromises and design choices made in Asian military…Timo A. Nieminen·Jan 9, 2011SaveLearn
A New Scientific Revolution at the Horizon?At this beginning of the 21st century, the situation of physics is not without analogy with that which prevailed a hundred years ago, with the outset of the double scientific revolution of relativity…Gilles Cohen-Tannoudji, Sylvain Hudlet·Jan 6, 2011SaveLearn
What can we say about nature?In this essay, I review the importance of languages in the study of reality, following the well-known aphorisms by Galilei, Bohr and many others. The emphasis on these aspects helps us to understand…Luigi Foschini·Jan 5, 2011SaveLearn
The Einstein-Jordan conundrum and its relation to ongoing foundational research in local quantum physicsWe demonstrate the extraordinary modernity of the 1924/25 "Einstein-Jordan fluctuation conundrum", a Gedankenexperiment which led Jordan to his quantization of waves published as a separate…Bert Schroer·Jan 3, 2011SaveLearn
The contribution by Domenico Pacini to the Cosmic Ray PhysicsBetween 1900 and 1913 several people were investigating about the unknown radiation, later identified as Cosmic Rays. Several experimentalist tried to identify the origin of this radiation and in…Nicola Giglietto·Jan 2, 2011SaveLearn
Unitary theories in the work of Mira Fernandes (beyond general relativity and differential geometry)An analysis of the work of Mira Fernandes on unitary theories is presented. First it is briefly mentioned the Portuguese scientific context of the 1920s. A short analysis of the extension of Riemann…José P. S. Lemos·Dec 22, 2010SaveLearn
Nationalism and internationalism in science: the case of the discovery of cosmic raysThe discovery of cosmic rays, a milestone in science, comprised scientists in Europe and the US and took place during a period characterised by nationalism and lack of communication. Many scientists…Per Carlson, Alessandro De Angelis·Dec 22, 2010SaveLearn
Lorenz's electromagnetic theory of lightThe Lorenz electromagnetic theory of light, published two years after the Maxwell theory, starts by postulating that both scalar and vector potentials are retarded. We show that in spite of this…C. W. Wong·Dec 18, 2010SaveLearn
The Coriolis Effect Apparently Described in Giovanni Battista Riccioli's Arguments Against the Motion of the Earth: An English Rendition of Almagestum Novum Part II, Book 9, Section 4, Chapter 21, Pages 425, 426-7In his encyclopedic work on astronomy, the 1651 Almagestum Novum, the Italian Jesuit Giovanni Battista Riccioli (1598-1671) argued against the movement of the Earth on the grounds that (among other…Christopher M. Graney·Dec 16, 2010SaveLearn
Breaking the symmetry. The first steps of a new way of thinkingThe concept of Spontaneous Symmetry Breaking (SSB) represents a real breakthrough for present description of fundamental interactions by means of gauge theories. Although the underlying ideas were…Ignazio A. Sardella·Dec 13, 2010SaveLearn
A brief social history of astrobiology in Ibero-americaThe work is divided into three sections: the first one describes the historical evolution of the main arguments presented about the plurality of inhabited worlds, from the presocratics to the birth…Guillermo A. Lemarchand·Dec 12, 2010SaveLearn
A snapshot from the history of cosmic ray research: a Japanese scientist viewThis short note describes the history of cosmic ray research. A part of this document was presented orally at the international conference of CRIS 2010 held in Catania, Italy. The document is written…Yasushi Muraki·Dec 7, 2010SaveLearn
Of Cats and Quanta: Paradoxes of Knowing and Knowability of RealityThe legacy of Post-Modernism is renewed attention to the issues of knowledge production. Now that post-modernism is out of fashion, the emphasis is no longer on the "cursed" questions…Gennady Shkliarevsky·Dec 1, 2010SaveLearn
General relativity, differential geometry, and unitary theories in the work of Mira FernandesAn analysis of the work of Mira Fernandes on unitary theories is presented.José P. S. Lemos·Nov 29, 2010SaveLearn
Felix de Roy: a life of variable starsFelix de Roy (1883-1942), an internationality recognised amateur astronomer, made significant contributions to variable star research. As an active observer, he made some 91,000 visual estimates of a…Jeremy Shears·Nov 28, 2010SaveLearn
Is the Quantum World Composed of Propensitons?In this paper I outline my propensiton version of quantum theory (PQT). PQT is a fully micro-realistic version of quantum theory that provides us with a very natural possible solution to the…Nicholas Maxwell·Nov 19, 2010SaveLearn
Giovanni Battista Riccioli's Seventy-Seven Arguments Against the Motion of the Earth: An English Rendition of Almagestum Novum Part II, Book 9, Section 4, Chapter 34, Pages 472-7In 1651 the Italian Jesuit Giovanni Battista Riccioli (1598-1671) published in his encyclopedic work on astronomy, the Almagestum Novum, 77 arguments against the Copernican movement of the Earth.…Christopher M. Graney·Nov 16, 2010SaveLearn
Relativistic Constraints for a Naturalistic Metaphysics of TimeThe traditional metaphysical debate between static and dynamic views in the philosophy of time is examined in light of considerations concerning the nature of time in physical theory. Adapting the…Peter W. Evans·Nov 10, 2010SaveLearn
Robert H. KraichnanRobert Harry Kraichnan (1928-2008) was one of the leaders in the theory of turbulence for a span of about forty years (mid-fifties to mid-nineties). Among his many contributions, he is perhaps best…Gregory Eyink, Uriel Frisch·Nov 10, 2010SaveLearn
Further Argument Against the Motion of the Earth, Based on Telescopic Observations of the Stars: An English Rendition of Chapter 30, Book 9, Section 4, Pages 460-463 of the Almagestum Novum Volume II of G. B. RiccioliThe Italian Jesuit astronomer Giovanni Battista (Giambattista) Riccioli constructed a powerful, thoroughly scientific argument in favor of geocentrism - an argument based on telescopic observations…Christopher M. Graney·Nov 9, 2010SaveLearn
A cognitive approach to the topography of the 12th dynasty pyramidsThe topography of the royal pyramids of the 12th dynasty is investigated in its historical and chronological context, in order to highlight connections between the architectural choices, the…Giulio Magli·Nov 9, 2010SaveLearn
A Review of One-Way and Two-Way Experiments to Test the Isotropy of the Speed of LightAs we approach the 125th anniversary of the Michelson-Morley experiment in 2012, we review experiments that test the isotropy of the speed of light. Previous measurements are categorized into one-way…Md. Farid Ahmed, Brendan M. Quine, Stoyan Sargoytchev et al.·Nov 5, 2010SaveLearn
The Weather and its Role in Captain Robert F. Scott and his Companions' DeathsA long debate has ensued about the relationship of weather conditions and Antarctic exploration. In no place on Earth is exploration, human existence, and scientific research so weather dependent. By…Krzysztof Sienicki·Nov 4, 2010SaveLearn
Indigenous Astronomies and Progress in Modern AstronomyFrom an anthropological point of view, the whole concept of a "path of progress" in astronomical discovery is anathema, since it implicitly downgrades other cultural perspectives, such as the…Clive Ruggles·Oct 23, 2010SaveLearn
An Aboriginal Australian Record of the Great Eruption of Eta CarinaeWe present evidence that the Boorong Aboriginal people of northwestern Victoria observed the Great Eruption of Eta (η) Carinae in the nineteenth century and incorporated the event into their oral…Duane W. Hamacher, David J. Frew·Oct 22, 2010SaveLearn